Browse Prior Art Database

Controlled Access Multi Person Switch

IP.com Disclosure Number: IPCOM000087031D
Original Publication Date: 1976-Dec-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Sirbola, G: AUTHOR

Abstract

In areas where entry is controlled by use of a badge or other identification, it is desirable to prevent entry of two persons on one badge. The device described here can detect the presence of a second person at the entry and can deny access or activate a signal.

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Controlled Access Multi Person Switch

In areas where entry is controlled by use of a badge or other identification, it is desirable to prevent entry of two persons on one badge. The device described here can detect the presence of a second person at the entry and can deny access or activate a signal.

Referring to the figure, the usual entry control will comprise a badge reader 1 or similar device connected to a processor 2 which will react to the presentation of the badge by activating an entry control device 3. At critical areas, a switch matrix 4 can be positioned so that any person entering must walk across the matrix 4.

The matrix 4 may be comprised of individually connected pressure-sensitive switches 5 (indicated as circles) or as rows and columns of interconnected switches. The switches will be connected by one or more cables 6 to the processor 2 which can analyze the pattern of closed switches 5 (indicated by solid circles).

In operation, when a person has presented his badge to reader 1, he will then be standing on or will have to walk across switch matrix 4 and will close a pattern of switches. The processor 2 can analyze the switch patterns to ensure that not more than two groups of operated switches 5 are present and that each group is of an acceptable size and will then activate entry device 3. If the closed switches 5 indicate that more than two groups of closed switches are present showing that more than one person is attempting entrance or other e...